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WO2013053559A1 - Procédé de transmission de données sous forme de télégramme - Google Patents

Procédé de transmission de données sous forme de télégramme Download PDF

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Publication number
WO2013053559A1
WO2013053559A1 PCT/EP2012/067797 EP2012067797W WO2013053559A1 WO 2013053559 A1 WO2013053559 A1 WO 2013053559A1 EP 2012067797 W EP2012067797 W EP 2012067797W WO 2013053559 A1 WO2013053559 A1 WO 2013053559A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
telegram
data format
block
fieldbus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2012/067797
Other languages
German (de)
English (en)
Inventor
Michael Schnalke
Manfred NIEDERER
Stephan Damith
Peter Biechele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SafeIn Train GmbH
Endress and Hauser Wetzer GmbH and Co KG
Original Assignee
SafeIn Train GmbH
Endress and Hauser Wetzer GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SafeIn Train GmbH, Endress and Hauser Wetzer GmbH and Co KG filed Critical SafeIn Train GmbH
Priority to EP12759679.9A priority Critical patent/EP2767019B1/fr
Publication of WO2013053559A1 publication Critical patent/WO2013053559A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication
    • G05B19/4186—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication by protocol, e.g. MAP, TOP
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0094—Bus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/4026—Bus for use in automation systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Definitions

  • the invention relates to a method by telegram
  • the invention relates to a use of the method, an arrangement comprising a first and second subscriber of a field bus and to a corresponding field device.
  • a method for telegram data transmission is already known from the prior art, for example, from the published patent application DE 102007032659 A1 a method for telegram data transmission.
  • a payload data block of the telegram in addition to the payload also a so-called.
  • the payload data block is divided into payload sub-blocks and checksum sub-blocks.
  • the payload data block is divided into payload sub-blocks and checksum sub-blocks.
  • Composition of the data means an extra effort.
  • the object is achieved by a method, a use of the method, an arrangement comprising two participants of a fieldbus system and a corresponding field device.
  • Information about the fieldbus in the form of data by means of at least one telegram are transmitted, wherein the information, in particular the same information, by means of at least one telegram in a first data format and in a second data format, wherein the first data format is different from the second data format. It is therefore an idea of the present invention to transmit information via a field bus in a redundant and / or diversified manner. For this purpose, different data formats are used, which the
  • a telegram has a
  • User data block which serves to transmit the information in the form of data, wherein the information, in particular the same information, are transmitted in the payload data block by means of the at least one telegram, preferably exactly one telegram, in the first data format and in the second data format.
  • the data are present in the form of a bit sequence and the second data format is a bit sequence inverted with respect to the first data format.
  • the second data format is a text character code, for example an ASCII code.
  • the first data format is a data format representing a number, for example integer or floating-point representation.
  • the first or the second data format specifies how the data contained in the payload data block is interpreted during loading, storage and / or processing.
  • the data is present in a first sub-block of the payload data block in the first format and in a second sub-block of the payload data block in the second format. The data includes the same information but differs in the data format in which it is transmitted.
  • the first and the second sub-block are the same size, the first sub-block is larger than the second
  • Sub-block and / or the second sub-block is larger than the first sub-block.
  • the information present in the first or second format is at least one, preferably exactly one, measured value of a process variable.
  • precisely one telegram is used for transmitting a measured value or a parameter, particularly preferably exactly one measured value or exactly one parameter, the measured value or the parameter in the first data format and the second data format in the user data block of the telegram are transmitted or will.
  • data is transmitted via the fieldbus according to the HART protocol.
  • a telegram has, in addition to the payload data block, a preceding payload data block
  • Telegram header and a checksum block following the user data block are contained in the first and in the second, in particular in the payload data block
  • Data format present data from a receiver of the telegram compared.
  • the in the first and second data format available information can therefore be used for review and / or
  • a corresponding error message is output.
  • an error reaction can be brought about.
  • Such an error reaction can, for example, consist of activating an actuator, for example a valve, or of switching off or shutting down a process taking place, for example, in an industrial filing system.
  • a telegram transmitted via the fieldbus in particular in the payload data block, has a sequence counter and / or a telegram number.
  • Sequence counter and / or the telegram number can be used to draw conclusions about the order (in particular the chronological order and time difference) of the telegrams or the user data in which they are transmitted via the fieldbus. Such an evaluation can be performed by the receiver of the telegram or telegrams.
  • the payload data block also contains a time stamp. In this way, the time difference between, for example, the reception of two telegrams can be monitored.
  • a plausibility check of the data transmission bpw. based on stored data or a stored model. For example, the time difference between two consecutively received telegrams, for example, must always be positive or negative. If this is not the case, an error has occurred during the data transfer or the telegrams have become obsolete.
  • one of said embodiments is used to fulfill a safety function.
  • the process is preferred for
  • first and the second participant preferably measured values and / or parameters in particular
  • safety relevant parameters acc. replace the proposed method in one of the aforementioned embodiments.
  • the method may, for example, in a particular operating mode of a subscriber, for example.
  • Field device can be applied.
  • an operating mode it may be, for example, a secure parameterization and / or secure
  • the object is achieved by a field device of
  • Act field device Such field devices are, for example, in industrial
  • it may be a measuring device for detecting a chemical and / or physical measured variable.
  • FIG. 1 shows a schematic representation of the sequence of a telegram-type data transmission between a first and a second subscriber of a fieldbus.
  • FIG. 1 shows a first participant FG of a field bus FB which, for example, is a field device.
  • a field device may be a sensor, an actuator or an operating and / or display unit that is used in an industrial plant of process automation technology can be used.
  • Such field devices are manufactured and sold by the applicant.
  • the first user FG has a data memory DS retrieved from the user data ND or transferred to the user data ND and / or stored.
  • the useful data ND can be, for example, measured values and / or parameters or parameter values recorded by the first user FG and / or for the user
  • the user data are present in a first data format, acc. which data format they are stored and / or processed.
  • This user data ND can be sent to another participant BG of the
  • Fieldbus FB be transferred.
  • the second subscriber BG which may be, for example, a higher-level unit, such as a control unit of the system, a gateway that allows remote access to the system, another field device or an operator device that is used to operate the field device, i. is used for making adjustments and / or a display unit, which is used to display data transmitted via the fieldbus FB, also has a data memory DS, in which data such as. Measured values, for example, have been received via the fieldbus FB , Parameters etc. can be stored.
  • the first and the second participant FG, BG are, as I said, connected to each other via a field bus FB.
  • Fieldbuses FB of this kind are tailored specifically to the requirements as they prevail in an industrial plant, i. are, for example, power-limited and have special ones
  • Such a protocol and the correspondingly operating field bus is, for example, the HART protocol accordingly data is transmitted via the fieldbus FB.
  • the digital communication via such a fieldbus FB takes place in the form of telegrams, which usually have a telegram header HD, a so-called header, which, for example, the destination address, ie, for example, the
  • Field bus address of the subscriber to which the telegram T is directed and has a payload data block NB, in which the to the receiver of
  • Telegram T certain data is transmitted. Furthermore, such a telegram T has a test block which contains a checksum as known from the prior art.
  • the checksum CRC which may be, for example, a CRC checksum or any other hash, checks the consistency of the data in the payload data block NB, thereby avoiding and / or detecting errors in the data transmission.
  • checksum for example, those known from the prior art
  • Method CRC-16, -32 or MD5 can be used.
  • User data ND provided for transmission can be transferred from the data memory DS of the first user FG to a data link SS, which serves to maintain the consistency of the user data ND.
  • the security layer SS is, for example, a program which determines backup data SD corresponding to the user data ND.
  • Backup data SD contain the same information or information as the user data ND. According to an idea of the invention are the
  • the payload ND are, as I said, in a certain
  • the link layer SS converts the information present in the first data format ND into a second data format SD, thus generating a data block containing redundant information in the diverse data formats ND, SD.
  • This data block which contains the user data ND and the backup data SD, is then transferred to a fieldbus stack FBS, which packs the data block into a telegram.
  • the fieldbus stack FBS is used in particular
  • Communication used fieldbus protocol is conditional.
  • the data block is then packed into a telegram T by means of the fieldbus bag FBS.
  • the telegram T which contains the user data ND and the backup data SD in the payload data block NB of the telegram T, is then transmitted via the fieldbus FB to the second subscriber BG of the fieldbus FB.
  • the field bus FB can also have additional subscribers, not shown.
  • the user data ND and the backup data SD can also be transmitted in two separate telegrams, but then, for example, require a telegram counter or sequence counter in order to be able to reassign the two telegrams at the receiver.
  • Backup data SD containing user data block NB This data block is then processed by a data link SS also provided in the second subscriber BG.
  • the user data ND and the backup data SD can be compared with one another and thus checked for consistency.
  • the information contained in the various data formats is compared with each other. This can be a
  • Further processing of the data and / or reporting a fault to another instance such as an operator and / or a control system, for example.
  • the control system can then, for example, carry out the further error processing.
  • a plausibility conclusion from the information obtained, for example, from the deviation between the time and / or the time difference between receiving two telegrams is executed.
  • the user data ND received or transmitted by the first subscriber can be stored, displayed or further processed in the data memory of the second subscriber BG, which is, for example, preferably an operator panel in the form of a handheld terminal.
  • the telegram T may contain, in addition to the backup data SD in the payload data block NB, just a checksum block CRC which likewise serves to check the consistency of the data in the payload data block NB.
  • This checksum block CRC is evaluated by the fieldbus stack FBS.
  • the present invention can not only be used to safely transmit readings, i. ND user data, but also for the safe parameterization of a field device can be used.
  • the use for secure transmission and definition / configuration of parameters of a field device is possible. In this case, for example. HMI devices and / or

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Computer And Data Communications (AREA)

Abstract

L'invention concerne un procédé de transmission de données sous forme de télégramme par le biais d'un bus de terrain (FB) de la technologie de l'automatisation des processus. Des informations sont transmises via le bus de terrain sous forme de données au moyen d'au moins un télégramme (T) dans un premier format de données (ND) et un deuxième format de données (SD), le premier format de données (ND) étant différent du deuxième format de données (SD).
PCT/EP2012/067797 2011-10-12 2012-09-12 Procédé de transmission de données sous forme de télégramme Ceased WO2013053559A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12759679.9A EP2767019B1 (fr) 2011-10-12 2012-09-12 Procédé de transmission de données sous forme de télégramme

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011084364A DE102011084364A1 (de) 2011-10-12 2011-10-12 Verfahren zur telegrammweisen Datenübertragung
DE102011084364.7 2011-10-12

Publications (1)

Publication Number Publication Date
WO2013053559A1 true WO2013053559A1 (fr) 2013-04-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/067797 Ceased WO2013053559A1 (fr) 2011-10-12 2012-09-12 Procédé de transmission de données sous forme de télégramme

Country Status (4)

Country Link
US (1) US8782312B2 (fr)
EP (1) EP2767019B1 (fr)
DE (1) DE102011084364A1 (fr)
WO (1) WO2013053559A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115795322B (zh) * 2023-01-31 2023-09-26 北京全路通信信号研究设计院集团有限公司 铁路配置数据比对方法、装置、电子设备及存储介质

Citations (4)

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Publication number Priority date Publication date Assignee Title
US6915444B2 (en) * 2001-09-12 2005-07-05 Rockwell Automation Technologies, Inc. Network independent safety protocol for industrial controller using data manipulation techniques
US7203885B2 (en) * 2003-09-30 2007-04-10 Rockwell Automation Technologies, Inc. Safety protocol for industrial controller
DE102007032659A1 (de) 2007-07-13 2009-01-15 Knick Elektronische Messgeräte GmbH & Co. KG Verfahren zur telegrammweisen Datenübertragung in einem seriellen Kommunikationsprotokoll sowie dieses nutzende Datenübertragungsvorrichtung
DE102010001211A1 (de) * 2009-12-23 2011-06-30 Endress + Hauser Flowtec Ag Flexibel konfigurierbares Datenübertragungsobjekt

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DE19934514C5 (de) * 1999-07-22 2013-03-14 Pilz Gmbh & Co. Kg Verfahren zum Konfigurieren eines an einen Feldbus angeschlossenen Busteilnehmers
ATE329424T1 (de) * 2001-09-26 2006-06-15 Siemens Ag Weiterleitung von datentelegrammen mit koppelknot datenersatz
DE10155189A1 (de) * 2001-11-12 2003-07-03 Endress & Hauser Gmbh & Co Kg Verfahren zur Regelung der Stromversorgung mehrerer Feldgeräte
EP1596262B1 (fr) * 2004-05-10 2007-04-11 Siemens Aktiengesellschaft Transfert de données orienté sûreté
DE102004062683A1 (de) * 2004-12-21 2006-06-29 Bosch Rexroth Aktiengesellschaft Verfahren zur Regelung einer Übertragung mit kurzen Datentelegrammen
JP2009049642A (ja) 2007-08-17 2009-03-05 Omron Corp 伝送システム
DE102007046178A1 (de) * 2007-09-26 2009-04-09 Phoenix Contact Gmbh & Co. Kg Steuerungsblock mit einer Punkt-zu-Punkt-Kommunikation zwischen einem an einen Datenbus anzuschaltenden Steuerungs-Mastermodul und Erweiterungs-Slavenmodulen
DE102007054417A1 (de) * 2007-11-13 2009-05-14 Endress + Hauser Flowtec Ag Bestimmen von geräteinternen Parameteradressen aus feldbusspezifischen Parameteradressen eines Feldgerätes
DE102008018633B4 (de) * 2008-04-11 2013-10-10 Phoenix Contact Gmbh & Co. Kg Verfahren, Buskomponenten und Steuerungssystem zur Ethernet-basierten Steuerung eines Automatisierungssystems
JP2011159119A (ja) * 2010-02-01 2011-08-18 Fujitsu Ltd 情報処理装置、情報送信方法および情報受信方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6915444B2 (en) * 2001-09-12 2005-07-05 Rockwell Automation Technologies, Inc. Network independent safety protocol for industrial controller using data manipulation techniques
US7203885B2 (en) * 2003-09-30 2007-04-10 Rockwell Automation Technologies, Inc. Safety protocol for industrial controller
DE102007032659A1 (de) 2007-07-13 2009-01-15 Knick Elektronische Messgeräte GmbH & Co. KG Verfahren zur telegrammweisen Datenübertragung in einem seriellen Kommunikationsprotokoll sowie dieses nutzende Datenübertragungsvorrichtung
DE102010001211A1 (de) * 2009-12-23 2011-06-30 Endress + Hauser Flowtec Ag Flexibel konfigurierbares Datenübertragungsobjekt

Also Published As

Publication number Publication date
US8782312B2 (en) 2014-07-15
US20130097342A1 (en) 2013-04-18
DE102011084364A1 (de) 2013-04-18
EP2767019A1 (fr) 2014-08-20
EP2767019B1 (fr) 2021-04-28

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